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April Weather in Jefferson, United States

Last updated: June 24, 2025

In April, the average temperature in Jefferson, United States hovers around 11°C (52°F). While you might experience a minimum chill of -6°C (21°F), the mercury can rise to a comfortable 26°C (79°F). Be prepared for precipitation as well, averaging 143 mm (5.6 in) over the course of 12 days, with a striking average humidity of 84%.

April Temperature in Jefferson

In April in Jefferson, the average temperature is 11°C (52°F), with maximums reaching 26°C (79°F) and minimums dipping as low as -6°C (21°F). This varied climate makes Jefferson an ideal destination for travelers seeking a mix of cool and warm weather experiences.

April Weather in Jefferson: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Jefferson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jefferson, April typically has an average temperature of 11°C (52°F), with highs reaching up to 26°C (79°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec344044526066706864564238
Data source: Temperature data for Jefferson generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Jefferson

In Jefferson in April, the total precipitation amount is 143 mm (5.6 in) over the course of 12 days.

April Precipitation Trends in Jefferson

The chart displays monthly precipitation patterns in Jefferson, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Jefferson, April typically receives around 143 mm (5.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec8812911214314013210313312613076107
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Jefferson

In Jefferson in April, humidity is 84%. With an average temperature of 11°C (52°F), this humidity feels like a heavy blanket, making it uncomfortable for traveling as the dampness clings to your skin and can leave you feeling sluggish and fatigued.

April Average Humidity in Jefferson

This chart illustrates the average monthly humidity levels in Jefferson, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Jefferson is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Jefferson

In Jefferson in April, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Jefferson.

Maximum UV Index Levels in Jefferson for April

The chart shows the monthly maximum UV Index (UVI) for Jefferson in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Jefferson typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111111111110863
Data source: Jefferson April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How April Weather in Jefferson Compares to Other Months

Weather in Jefferson varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Jefferson, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Jefferson, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)88 mm (3.5 inches)87%moderate
February Weather4°C (40°F)129 mm (5.1 inches)87%high
March Weather7°C (44°F)112 mm (4.4 inches)86%very high
April Weather11°C (52°F)143 mm (5.6 inches)84%extreme
May Weather16°C (61°F)140 mm (5.5 inches)83%extreme
June Weather19°C (66°F)132 mm (5.2 inches)83%extreme
July Weather21°C (70°F)103 mm (4.0 inches)79%extreme
August Weather20°C (69°F)133 mm (5.2 inches)66%extreme
September Weather18°C (65°F)126 mm (5.0 inches)68%very high
October Weather13°C (56°F)130 mm (5.1 inches)78%very high
November Weather6°C (42°F)76 mm (3.0 inches)89%high
December Weather3°C (38°F)107 mm (4.2 inches)86%moderate

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